自从七十年代初微处理机(μP)问世以来发展极其迅速。由于其集成度急剧提高而其成本逐步降低,打破了广泛应用的价格“壁垒”。又由于其各种芯片的(chip)的多样化及系列化,因此逐渐渗透到仪器仪表工业、过程控制、日常生活等各个领域。同时也深刻影响着先于微处理机出现的模拟式仪器仪表的发展方向。可 Microprocessors (μP) have been growing extremely rapidly since the advent of microprocessors in the early 1970s. Due to its dramatic increase in integration and its gradual reduction in costs, the “price barrier” to widespread use has been broken. And because of its various chip (chip) diversity and serialization, and therefore gradually penetrate the instrumentation industry, process control, daily life and other fields. It also has a profound impact on the development of analog instrumentation that precedes microprocessors. can